Crosslinkable cellulose derivatives
US5067565A · kind A · utility
76Cited by
28References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1990 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Oct 4, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/926
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel treating fluid compositions containing crosslinkable non-ionic cellulose derivatives and methods of use in petroleum recovery operations are disclosed. The treating fluid polymers are prepared by reacting vinyl monomers having a crosslinkable substituent with a cellulose derivative using a redox system comprising the reaction product of hydrogen peroxide with ferrous salt. The polymers readily crosslink with polyvalent metal ions, such as zirconium and titianium, to form temperature-stable gels useful in petroleum recovery operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.